Ill go through these step by step.:
DM.kick2:
Not very impressive. Stiff, slow and really simple. Try to relax more, take your 500 frames to build momentum, that makes it look faster and more complex.
4dm.in.a.row.3
Grabby, messy, slow and stiff. Be sure to make the first hit at least ungrabbed, then grab IF you need to. Let go whenever you can. Also, if you grab and contract both elbows, sure, you'll dismember something, but it gets a bit messy. And ofcourse, relax more and move faster.
my.first.headkick
Pretty nice, apart from the grab.
IT RAY
It's really not cool to show use twinsword replays or any other instagib mod. What you did was landing on someone with your foot who failed in hitting your leg there, that says enough 'bout that person. Not impressed
blackbelt beat
You were about to get owned, but he forgot to extend his knee instead of hold. Well, congratulations, but this black belt made a pretty fatal mistake at -30 grav. Just because he is a blackbelt doesn't mean he's hard to beat.
That's abut it.
I'm really sorry if this looks like I'm bullying you, I'm not, I'm just trying to help you get better.